Antislipping and non-wearing medium.



PATENTED FEB. 18, 1908.

0. D. MGGIBHAN. ANTISLIPPING 'AND NoN-WEARING MEDIUM.

APPLIGATION FILED 11017.20. 1906.

nucnoz @D M9 @afm/n /WW @f CORNELIUS D. MCGIEHAN, OF JERSEY CITY, NEW JERSEY.

ANTISLIPPING ANDNON-WEARING WDIUM.

I Specification of Lettere Patent.

Patented Feb. 18, im.

Application filed November 20. 1906. Serial No. 344.338.

To all whom 'it may concern.'

Be it known that I, CORNELIUS D. McGin- HAN, a citizen of the United States, residing at Jersey City, in the county of Hudson and State of New Jersey, have invented new and useful Improvements in Antislipping and Non-Wearing Mediums, of which the following is a specification.

This invention relates to anti-sli ping and non-wearing mediums for enera use and particularly adapted for app ication or incororation in stair, tread, horse-shoe, automoliile shoe and other analogous structures, and consists essentially of a contactingor tread niember having an obdurate substance and a softer material both included'in the member and exposed by a surface thereof.

The primary object of the invention is the production of a contacting or tread member aving both a very hard substance and a softer material therein to form a surface for full exposure having the characteristic of durabillty as Well as anti-slipping qualities in one organization to insure resistance to Vwear and sullicient adhesion with relation to the surfaces or devices engaged thereby to render the member economical and effective for obviating falls and skidding or sliding movements.

The accompanying drawings in part illustrate a particular use of the nonwearing and anti-sli pin member, but it will be understood t iat t 1e member is unlimited in its applications. Further, the contour, thickness and other dimensions of the member are not essential, as the shape and dimensions may be varied indefinitely. l

In the drawing z-F igures land 2 represent detail views of two forms ofthe member embodying features of the invention. Fig. 3 is a longitudinal vertical' section of the member shounby Fig. 1. Fig. 4 is a plan view of a portion of a stair-tread shielding device or late showing one application of the memer. 5 is an edge elevation of the deviceor late shown by Big. 4.

he numeral 1 designatesthe non-wearing and anti-slipping member composed of an obdurate material 2, such as earborundum, adamite, emery or "other hard, gritty substance, and a softer material 3 such as an artificial stone composition, a metal, a metallic alloy, or other material havin anti-slipping or adhering qualities. As eit er carborundum, adamlte, or eme possesses the desired qualifications as Ian ob urate material and as an artificial stone composition, a metal, or a metallic alloy have the necessary anti-slipping or adhering qualities, it is tobe understood that in the claim the selection of the substance carborundum for the obdurate material and the metallic alloy forythe anti-slip ing material are to be employed generica ly to cover all of the materials named in both instances.

The obdurate material and softer substance may be-associated by any preferred method of procedure which will result in an exposed disposition thereof on one surface at least. The exposed surface embodying the obdurate material and softer substance may also be either smooth or rough as the particular application of the member may demand, but it has been found by experiment that each will more effectively perform its function if the surface be smooth. The exposed contact surface may be either flush with its holding means or be projected from the latter, and any device or structure may be utilized for securing the member against movement..

As shown by Figs. 4 and 5, 'o'ne of the advantageoususes of the member is for antislipping coverings of steps, and for this purpose a pluralityv of the members are secured to a supporting body or plate 4 which in turn is adapted to be fastened on the tread of a step. It will be obvious that without the provision of some means for relieving such body or late from accumulated dirt that it will soon become filthy and unhealthful. To overcome this disadvantage, intersecting grooves 5 and 6 are formed between the members, the said grooves being in direct alin'ement and open fully through the opposite side and end edges of the body `or plate to permit a broom or other cleaning device to be freely moved therein and force the dirt out of the body edges. It is unnecessary that the members be formed rectangular as shown to render the grooves effective, as other shapes may be adopted andv still preserve the continuity of the groove structure. The said grooves are also used for self-draining purposes.

Numerous other applications might be described showing a beneficial result derived from the association and exposure in each member of the obdurate and softer substances, in contradistinction to other antislipping and non-wearing com ositions and devices wherein either the obdurate substance alone has a surface exposure and held l bers having the sides thereof beveled and un- 1 by the softer substance, or the obdurate and interrupted throughout, the upper faces of softer substances are used -alone or arranged said tread members further uninterruptedl individually in the form of adjacent strips throughout said tread members disposed or members. I throughout the upper face of said base so as What I claim is: i to form a series of transversely and longi- 2 A tread device for steps comprising a base l tudinally-extending intersecting grooves bcwith the upper surface thereof upon the tween said members.' l same plane throughout, a plurality of tread I In testimony whereof, I ailix my signature members each consistin of a mass of carin presence of two witnesses. borundum and a metal ic alloy, said tread CORNELIUS D. MCGIEHAN. members having Hat llower faces',Y said fiat l Witnesses: lower faces of said tread members secured `to CHAS.y S. HYER, the upper face of the base, said tread mem- BERNARD P. VASHON. 

